Date: Wed, 13 Oct 2010 15:06:30 -0400 (EDT) From: Josh Bressers <bressers@...hat.com> To: oss-security@...ts.openwall.com Cc: coley <coley@...re.org> Subject: Re: CVE request: ettercap GTK ----- "Dan Rosenberg" <dan.j.rosenberg@...il.com> wrote: > The GTK version of ettercap uses a global settings file at > /tmp/.ettercap_gtk and does not verify ownership of this file before > reading it. When parsing this file for settings in gtkui_conf_read() > (src/interfaces/gtk/ec_gtk_conf.c), an unchecked sscanf() call can > result in a stack-based buffer overflow. Local users can place > maliciously crafted settings files at this location to exploit other > users who run ettercap. On most distributions, stack-smashing > protection will mitigate the impact. I'm unclear as to whether there > are settings that could be forced upon other users that make ettercap > misbehave in a dangerous way. > > There are two issues here (insecure temporary file usage and > stack-based buffer overflow), but they're probably only > security-relevant when exploited in conjunction. Not sure if it > should get one CVE or two. > > Reference: > https://bugs.launchpad.net/ubuntu/+source/ettercap/+bug/656347 > > We'll use two: CVE-2010-3843 ettercap GTK insecure temporary file use CVE-2010-3844 ettercap GTK format string flaw Thanks. -- JB
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